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Microsoft published Security Update Guide entries for several CVEs affecting its products, including Windows Hyper-V Information Disclosure Vulnerability CVE-2023-36406 and additional advisories for CVE-2024-26188, CVE-2025-21271, CVE-2025-21274, CVE-2025-21302, CVE-2026-24285, and CVE-2026-25177. The references indicate a continuing stream of vulnerability disclosures across Microsoft’s ecosystem, with Hyper-V specifically identified in one advisory as an information disclosure issue.
The available records provide limited technical detail, but they show Microsoft tracking and publishing these flaws through the MSRC Security Update Guide and portal advisories. For defenders, the immediate takeaway is to review the listed CVEs in Microsoft’s update channels, determine product exposure across Windows and virtualization environments, and prioritize remediation or compensating controls where affected systems are present.
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9 events from the most recent confirmed update back to the earliest known activity.
Microsoft publishes a Security Update Guide advisory for CVE-2025-21296. The supplied reference contains no synopsis or additional technical details.
Microsoft publishes a Security Update Guide advisory for CVE-2025-21315. The supplied reference contains no synopsis or additional technical details.
Microsoft publishes a Security Update Guide advisory for CVE-2026-25177. No additional synopsis or vulnerability details are present in the reference.
Microsoft publishes a Security Update Guide advisory for CVE-2025-21302. The reference does not include a synopsis or technical description.
Microsoft publishes a Security Update Guide advisory for CVE-2025-21274. No further details are included in the provided content.
Microsoft publishes a Security Update Guide advisory for CVE-2025-21271. The supplied reference contains no synopsis or additional context.
Microsoft publishes a Security Update Guide entry for CVE-2024-26188. The reference provides no synopsis or further technical details.
Microsoft's Security Update Guide lists CVE-2023-36406 as a Windows Hyper-V Information Disclosure Vulnerability. No additional synopsis or remediation details are provided in the reference content.
Microsoft publishes a Security Update Guide advisory entry for CVE-2026-24285. The provided reference includes no synopsis or substantive details.
9 references tracked. Mallory keeps watching after this page renders.
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Microsoft disclosed and patched several **Windows Hyper-V elevation of privilege vulnerabilities** tracked as `CVE-2022-21901`, `CVE-2023-36427`, `CVE-2024-43624`, and `CVE-2025-54098`. The advisories identify a recurring security issue affecting Hyper-V components, including one flaw specifically tied to **Hyper-V Shared Virtual Disk**, with each entry published through Microsoft's Security Update Guide and related advisory portals. The vulnerabilities could allow attackers to gain higher privileges on affected Windows systems running Hyper-V, increasing the risk to virtualized environments and hosts that rely on Microsoft's hypervisor stack. Organizations using Hyper-V should review the relevant Microsoft advisories, determine exposure across guest and host infrastructure, and prioritize deployment of the corresponding security updates to reduce the chance of privilege escalation in enterprise virtualization deployments.
Jul 8, 2026
Microsoft has published security advisories for **CVE-2026-40402**, a **Windows Hyper-V Elevation of Privilege** vulnerability listed in the Microsoft Security Update Guide. The flaw affects Hyper-V, Microsoft's virtualization platform, and could allow an attacker to gain elevated privileges on a vulnerable system. The advisory was released through Microsoft's public update channels, including the Security Update Guide and MSRC advisory pages, but no public synopsis or technical details were provided in the referenced notices. Organizations using **Windows Hyper-V** should review Microsoft's guidance for affected versions, patch availability, and any mitigation steps tied to `CVE-2026-40402`.
Jul 8, 2026
Microsoft published Security Update Guide entries for **`CVE-2025-21263`**, **`CVE-2024-49016`**, **`CVE-2024-20671`**, and the older **`CVE-2021-28348`**, indicating active tracking and disclosure of multiple vulnerabilities across its product ecosystem. The referenced advisories come from Microsoft’s official MSRC channels, but the available records provide little public detail beyond the CVE identifiers and their presence in the update guide. The set of references points to ongoing Microsoft vulnerability management activity, with newer 2024 and 2025 advisories appearing alongside a prior 2021 entry in the same update infrastructure. Organizations that rely on Microsoft platforms should use the CVE records as authoritative placeholders for patch validation and asset review, and monitor the corresponding MSRC pages for severity, affected products, and remediation guidance as fuller advisory details become available.
Jul 8, 2026